Introduction

Microorganisms are living things that are too small to be seen with the naked eye. They can only be viewed using a microscope. Bacteria, viruses, and some fungi are examples of microorganisms. Most microorganisms are essential to life on Earth. However, some of them are harmful to humans, animals, and plants and can cause disease.

Microorganisms are also called microbes. The ones that cause diseases are called germs. They exist in all places, including the soil, air, and inside and on the surface of living things. The study of microorganisms is called microbiology.

Introduction to Microorganisms

Directions:

1. Grab your Science Journal and a pencil.
2. Write down today’s Lesson Title at the top of your next Journal page.
3. Write today’s learning objective on the first line.
4. Watch the Module 3 - Lesson 1 video below.
5. Write down the important terms and their definitions (yellow boxes) in your Science Journal.
6. Pause the video as often as you need.

Activity

In your Science Journal: After you watch the video, copy the following chart into your Science Journal.

From watching the video, do your best to try to remember the five types of organisms that can be categorized as “microorganisms.” Go back and watch that section of the video again to ensure you have all five types listed in your Science Journal.

Types of Microorganisms title with five categories to fill in

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